# alist = [1, 2, 3, 4]
# alist.append('hello')
# print(alist)
#
# alist = [1, 2, 3, 4]
# alist.insert(1, 'hello')
# print(alist)

# alist = [1, 2, 3, 4]
# print(2 in alist)
# print(10 in alist)

alist = [1, 2, 3, 4]
print(alist.index(2))
print(alist.index(10))

























